TW200710629A - Constant current circuit - Google Patents

Constant current circuit

Info

Publication number
TW200710629A
TW200710629A TW095130220A TW95130220A TW200710629A TW 200710629 A TW200710629 A TW 200710629A TW 095130220 A TW095130220 A TW 095130220A TW 95130220 A TW95130220 A TW 95130220A TW 200710629 A TW200710629 A TW 200710629A
Authority
TW
Taiwan
Prior art keywords
constant current
resistor element
current
output
current circuit
Prior art date
Application number
TW095130220A
Other languages
Chinese (zh)
Inventor
Satoshi Yokoo
Original Assignee
Sanyo Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co filed Critical Sanyo Electric Co
Publication of TW200710629A publication Critical patent/TW200710629A/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/262—Current mirrors using field-effect transistors only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors

Abstract

In a conventional constant current circuit which is manufactured by a CMOS process, a resistor element having a negative temperature characteristic inverse to that a normal resistor element has, such as a polysilicon resistor, is formed, making the output of the constant current circuit easy to be influenced by temperature change. In the present invention, a temperature compensation circuit composed of a transistor Q8 for allowing a current I2 having a negative temperature characteristic to flow and a resistor element R2 is provided in parallel with a circuit composed of a transistor Q1 for allowing a current I1 having a positive temperature characteristic to flow, a resistor element Rl and a bipolar transistor Q6, to obtain a constant current output which is a sum current I of I1 and I2, to thereby obtaining an output with less influence of temperature change.
TW095130220A 2005-08-30 2006-08-17 Constant current circuit TW200710629A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005248880A JP2007065831A (en) 2005-08-30 2005-08-30 Constant current circuit

Publications (1)

Publication Number Publication Date
TW200710629A true TW200710629A (en) 2007-03-16

Family

ID=37803262

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095130220A TW200710629A (en) 2005-08-30 2006-08-17 Constant current circuit

Country Status (5)

Country Link
US (1) US7411442B2 (en)
JP (1) JP2007065831A (en)
KR (1) KR100808726B1 (en)
CN (1) CN100495282C (en)
TW (1) TW200710629A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI461879B (en) * 2008-02-13 2014-11-21 Seiko Instr Inc Constant current circuit

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009225282A (en) * 2008-03-18 2009-10-01 Seiko Npc Corp Constant current circuit
US7768342B1 (en) * 2008-05-23 2010-08-03 Maxim Integrated Products Bias circuit with non-linear temperature characteristics
JP2010165177A (en) * 2009-01-15 2010-07-29 Renesas Electronics Corp Constant current circuit
US7944271B2 (en) * 2009-02-10 2011-05-17 Standard Microsystems Corporation Temperature and supply independent CMOS current source
JP5475598B2 (en) 2010-09-07 2014-04-16 株式会社東芝 Reference current generator
KR20140071176A (en) * 2012-12-03 2014-06-11 현대자동차주식회사 Current generation circuit
JP5864657B2 (en) * 2014-04-14 2016-02-17 日本電信電話株式会社 Constant current circuit
CN104977975B (en) * 2014-04-14 2017-04-12 奇景光电股份有限公司 Temperature-unrelated integrated voltage source and current source
EP4212983A1 (en) * 2015-05-08 2023-07-19 STMicroelectronics S.r.l. Circuit arrangement for the generation of a bandgap reference voltage
EP3285383A1 (en) * 2016-08-15 2018-02-21 ABB Technology Oy Current conductor structure with frequency-dependent resistance
US9964975B1 (en) * 2017-09-29 2018-05-08 Nxp Usa, Inc. Semiconductor devices for sensing voltages
KR102600881B1 (en) * 2017-12-05 2023-11-09 자일링크스 인코포레이티드 Programmable temperature coefficient analog quadratic curvature compensated voltage reference and trim technology for voltage reference circuits
WO2023080433A1 (en) * 2021-11-04 2023-05-11 서울대학교산학협력단 Current mirror circuit and neuromorphic device comprising same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0820915B2 (en) 1984-12-31 1996-03-04 ロ−ム株式会社 Constant current circuit
JP3322685B2 (en) 1992-03-02 2002-09-09 日本テキサス・インスツルメンツ株式会社 Constant voltage circuit and constant current circuit
JPH07191769A (en) * 1993-12-27 1995-07-28 Toshiba Corp Reference current generation circuit
JP2836547B2 (en) * 1995-10-31 1998-12-14 日本電気株式会社 Reference current circuit
KR0183549B1 (en) * 1996-07-10 1999-04-15 정명식 Temperature independent current source
US6348832B1 (en) * 2000-04-17 2002-02-19 Taiwan Semiconductor Manufacturing Co., Inc. Reference current generator with small temperature dependence
US6522117B1 (en) * 2001-06-13 2003-02-18 Intersil Americas Inc. Reference current/voltage generator having reduced sensitivity to variations in power supply voltage and temperature
EP1315063A1 (en) * 2001-11-14 2003-05-28 Dialog Semiconductor GmbH A threshold voltage-independent MOS current reference
FR2832819B1 (en) * 2001-11-26 2004-01-02 St Microelectronics Sa TEMPERATURE COMPENSATED CURRENT SOURCE
JP2004015423A (en) 2002-06-06 2004-01-15 Mitsubishi Electric Corp Circuit for generating constant current
US6724244B2 (en) * 2002-08-27 2004-04-20 Winbond Electronics Corp. Stable current source circuit with compensation circuit
CN100543632C (en) * 2003-08-15 2009-09-23 Idt-紐威技术有限公司 Adopt the precise voltage/current reference circuit of current-mode technology in the CMOS technology

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI461879B (en) * 2008-02-13 2014-11-21 Seiko Instr Inc Constant current circuit

Also Published As

Publication number Publication date
CN100495282C (en) 2009-06-03
KR20070026041A (en) 2007-03-08
US20070046364A1 (en) 2007-03-01
JP2007065831A (en) 2007-03-15
US7411442B2 (en) 2008-08-12
CN1924751A (en) 2007-03-07
KR100808726B1 (en) 2008-02-29

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